This is the 14264th most frequent Russian word.
остеопороз
Osteoporosis is a medical condition characterized by weakened bones, increasing the risk of fractures.
Here, 'остеопороз' is used as the subject of the sentence, introducing the topic of the disease.
Остеопороз чаще встречается у пожилых людей.
Osteoporosis is more commonly found in the elderly.
In this context, 'остеопороз' is the object of the verb 'диагностировали', showing that the disease was identified in someone.
У моего родственника диагностировали остеопороз.
A relative of mine was diagnosed with osteoporosis.
Here, 'остеопороза' is in the genitive case, indicating the disease being prevented.